KR102680997B1 - Rim for track rollers - Google Patents

Abstract

The rim includes a wall, a first annular protrusion and a second annular protrusion. The wall portion includes a first end and a second end. The first end includes a first opening, and the second end includes a second opening in communication with the first opening to define a bore for the shaft of the track roller. The first annular protrusion and the second annular protrusion configured to engage with the orbit extend radially from the wall portion. The first annular protrusion includes a first flange configured to limit orbital movement in a first axis direction. The first flange includes a plurality of notches. The second annular protrusion includes a second flange configured to limit orbital movement in a second axis direction opposite to the first axis direction.

Description

Rim for track rollers

The present disclosure generally relates to raceway rollers of undercarriages and, for example, to rims for raceway rollers.

In industries such as construction, mining and forestry, machines may utilize tracks to distribute the machine's weight over the ground surface. As a result, the mechanism can be configured to traverse the ground surface with less chance of becoming stuck compared to a wheel driven mechanism. In the mechanism, a plurality of track rollers are rotatably connected to an undercarriage frame and guide the track around itself. To support the weight of the mechanism and withstand the forces associated with its operation, the plurality of tracked rollers may have a rigid structure that is expensive to manufacture.

U.S. Patent No. 6,280,009 discloses a carrier roller assembly for guiding and supporting the crawler track of a tracked machine. The roller includes a shell having first and second end portions and an intermediate portion. A plurality of bearings are positioned between the roller shell and a mounting shaft. A plurality of segments, including first and second end portions and a middle portion, are positioned about the roller shell to define a rim including substantially continuous raceway bearing surfaces thereon, and the middle portion is positioned around the roller shell. It is positioned to contact the middle part of . A first elastic ring is positioned around the first end portion of the roller shell and supports the first end portion of the rim member. The second elastic ring is positioned around the second end portion of the roller shell and supports the second end portion of the rim member.

The limbs of the present disclosure solve one or more of the problems presented above and/or other problems in the art.

In some embodiments, a rim for a track roller is a wall having a first end and a second end opposite the first end, the first end comprising a first opening, and the second end having a track. said wall portion comprising a second opening communicating with the first opening for defining a bore for the shaft of the roller; a first annular projection extending radially from the wall and engaging a first edge portion of the orbit, the first annular projection comprising a first external flange having a first plurality of external notches. wherein the first outer flange is configured to limit movement of the track in a first axis direction, and the first outer flange is formed from a single integral piece of material; and a second annular protrusion extending radially from the wall portion and interlocking with the second edge portion of the orbit, wherein the second annular protrusion is configured to limit movement of the orbit in a second axis direction opposite to the first axis direction. and a second annular protrusion comprising an external flange.

In some embodiments, the rim segment for a track roller is a wall portion having a first end and a second end, the first end comprising a first opening, and the second end defining a bore for a shaft of the track roller. The wall portion including a second opening in communication with the first opening; and an annular protrusion extending radially from the wall portion, the annular protrusion having a base portion configured to contact the edge portion of the orbit, and an exterior flange configured to limit axial movement of the orbit. and wherein the outer flange includes a plurality of notches, and the outer flange has a diameter greater than the diameter of the base portion.

In some embodiments, a rim segment for a tracked roller includes a substantially cylindrical wall portion having a first end and a second end; and an annular protrusion extending radially from the substantially cylindrical wall portion, the annular protrusion comprising a base portion configured to contact an edge portion of the orbit, and an outer flange configured to limit axial movement of the orbit, the outer portion comprising: The flange includes a plurality of notches, and the outer flange includes the annular protrusion having a diameter greater than the diameter of the base portion, and the rim segment is manufactured from a single, unitary piece of material.

1 is an isometric view showing an exemplary mechanism including a plurality of track rollers that engage and guide a track.
Figure 2 is a cross-sectional view showing an exemplary rim of one of a plurality of track rollers engaging with track links.
Figure 3 is an isometric cross-sectional view showing the rim interlocking with the links of the track.
Figure 4 is a side view showing the rim.
Figure 5 is an isometric view showing an exemplary rim segment of one of a plurality of tracked rollers.

The present disclosure relates to a rim for track rollers applicable to any machinery containing a track. Although a bulldozer is shown in Figure 1, other types of machinery are also contemplated. For example, the machinery may be a tractor, loader, excavator, conveyor system, or other type of machinery.

To simplify the description below, the same reference numerals may be used to indicate similar functions. Drawings may not be to scale.

1, an exemplary mechanism 100 is shown. As shown in FIG. 1, the machine 100 includes a machine body 102 and a lower traveling body 104 that supports the machine body 102 and enables its movement. The lower traveling body 104 includes a frame 106, a sprocket 108, a front idler 110, a rear idler 112, a plurality of track rollers 114, and a track 116 extending around these track rollers. Includes. The frame 106 is a structure that supports the sprocket 108, the front idler 110, the rear idler 112, a plurality of track rollers 114, and the track 116. In some implementations, frame 106 may include a recoil mechanism (not shown) to adjust the tension of tracks 116. A sprocket 108 rotatably mounted on the upper end of the frame 106 is configured to drive a track 116 around the frame 106. The front idler 110 and rear idler 112 are mounted on the front end and rear end of the frame 106, respectively, and are configured to guide the track 116 therearound. A plurality of track rollers 114 are rotatably mounted on the lower end of the frame 106, and are configured to guide the track 116 in conjunction with it between the front idler 110 and the rear idler 112. . Tracks 116 are ground-engaging devices that surround frame 106 and propel mechanism 100.

Although only one undercarriage 104 is shown in FIG. 1 , the machine 100 should be understood to also include a second undercarriage disposed on the opposite side of the machine body 102 . The second undercarriage is substantially formed as a mirror image of the undercarriage 104 .

As noted above, Figure 1 is provided as an example. Other examples may differ from those described with respect to FIG. 1 . For example, the number and arrangement of components may differ from that shown in FIG. 1. Accordingly, there may be additional components, fewer components, different components, differently formed components, differently sized components, and/or differently arranged components than those shown in FIG. 1. You can. For example, in some implementations, the undercarriage of the mechanism may not include a rear idler. In the above example, the undercarriage includes a front idler; Sprocket replaces rear idler; and a plurality of track rollers disposed between the sprocket and the front idler.

An example rim 200 (shown in FIGS. 2-4 ) and an example rim segment 500 (shown in FIG. 5 ) that constitute alternative components of one of the plurality of track rollers 114 114 shown) is explained below. Although not clearly shown, track roller 114 includes a shaft connecting track roller 114 to frame 106 and one that allows rim 200 or rim segment 500 to rotate relative to the shaft. It should be understood that it further includes one or more additional components (e.g. one or more bearings, one or more bushings and/or lubricants).

2-3, a rim 200 is shown in conjunction with a track 116. The orbit 116 includes a first plurality of links 202; a second plurality of links 204; and a plurality of pins 206 connecting the first plurality of links 202 and the second plurality of links 204 to each other. The first plurality of links 202 define a first edge portion 208 of the track 116, and the second plurality of links 204 define a first edge portion 208 of the track 116 opposite the first edge portion 208. 2 Define the edge portion 210.

2-3, rim 200 includes a first rim segment 212 and a second rim segment 214. The first rim segment 212 includes a first wall portion 216 and a first annular protrusion 218 . The substantially cylindrical first wall portion 216 includes a first outer end 220 and a first inner end 222 opposite the first outer end 220 . The first outer end 220 includes a first outer opening 224 inside the first plane 226 . The first interior end 222 includes a first interior opening 228 that communicates with the first exterior opening 224 to define a first bore 230 configured to receive a shaft.

The first annular protrusion 218 extends radially from the first wall portion 216 and is configured to engage the first edge portion 208 of the raceway 116 . The first annular protrusion 218 includes a first base portion 232, a first outer flange 234, which together are configured to support the first edge portion 208 of the raceway 116 and limit axial movement of the raceway. and a first inner flange 236. First base portion 232 has a first outer surface 238, a first inner surface 240, and a first side surface 242 connecting the first outer surface 238 to the first inner surface 240. Includes. The first outer surface 238 is substantially adjacent the first outer end 220 of the first wall portion 216, and the first inner surface 240 is a first inner end of the first wall portion 216 ( 222). To reduce the weight of the first rim segment 212, the first outer surface 238 and the first inner surface 240 include a first outer groove 244 and a first inner groove 246, respectively, which The groove is annular and substantially concentric with the first wall portion 216. The first side surface 242 is configured to contact and guide the first upper surface 248 of the first edge portion 208 of the track 116. In other words, first side surface 242 has a shape and size that substantially matches the shape and size of first top surface 248.

The first outer flange 234 extends radially from the first side surface 242 . To further reduce the weight of the first rim segment 212, the first outer flange includes a first plurality of outer notches 250 (shown more clearly in FIGS. 3-4). The first plurality of outer notches 250 extend axially, forming a first outer wavy surface of the first outer flange 234, adjacent the first outer surface 238 of the first base portion 232. 252) (undulating surface) is formed. To limit movement of the first edge portion 208 of the track 116 in the first axis direction, the first outer flange 234 has a first outer angled surface opposite the first outer wavy surface 252. (254) (angled surface) is further included. In some implementations, to minimize wear due to repeated contact with the first edge portion 208 of the raceway 116, the angle of the first outer angled surface 254 is adjusted to the first edge portion 208 of the raceway 116. The angle of the first outer side surface 256 of 208 may be substantially the same. For example, the angle may range from about 10 degrees to about 25 degrees relative to first plane 226.

The first inner flange 236 is axially spaced from the first outer flange 234. Similar to first outer flange 234 , first inner flange 236 extends radially from first side surface 242 . To further reduce the weight of the first rim segment 212, the first internal flange 236 similarly includes a first plurality of internal notches 258 (shown more clearly in Figure 3). The first plurality of internal notches 258 extend axially, forming a first internal wavy surface of the first internal flange 236, adjacent the first internal surface 240 of the first base portion 232. 260). To limit the movement of the first edge portion 208 of the track 116 in the direction of the second axis opposite to the first axis direction, the first inner flange 236 is connected to the first inner wavy surface 260. It further includes an opposing first internal angled surface 262. In some implementations, to minimize wear due to repeated contact with the first edge portion 208 of the raceway 116, the angle of the first inner angled surface 262 is adjusted to the first edge portion 208 of the raceway 116. The angle of the first inner side surface 264 of 208 may be substantially the same. For example, the angle may range from about 10 degrees to about 25 degrees relative to first plane 226. In some implementations, depending on the shape of the track 116, the angle of the first inner angled surface 262 may be different than the angle of the first outer angled surface 254.

To provide clearance between the first wall portion 216 and the raceway 116, the first base portion 232 has a diameter greater than the diameter of the first wall portion 216. For example, the diameter of first base portion 232 may range from about 164 millimeters (mm) to about 330 mm. To limit the movement of the first edge portion 208 of the track 116 in the first axis direction, the first outer flange 234 has a diameter greater than the diameter of the first base portion 232. For example, the diameter of first outer flange 234 may range from about 199 mm to about 395 mm. As an example, the ratio of the diameter of first base portion 232 to the diameter of first outer flange 234 may range from about 0.8 to about 0.94. To limit movement of the first edge portion 208 of the track 116 in the second axis direction, the first inner flange 236 has a diameter greater than the diameter of the first base portion 232. In some implementations, the diameter of the first inner flange 236 may be between the diameter of the first base portion 232 and the diameter of the first outer flange 234.

The second rim segment 214 is formed substantially as a mirror image of the first rim segment 212 . Accordingly, although the following description is simplified, it should be understood that the above description of the first limb segment 212 applies equally to the following description of the second limb segment 214. The second rim segment 214 includes a second wall portion 266 and a second annular protrusion 268. The second substantially cylindrical wall portion 266 includes a second outer end 270 and a second inner end 272 opposite the second outer end 270. The second outer end 270 includes a second outer opening 274. The second interior end 272 has a second interior opening in communication with the second exterior opening 274 to define a second bore 278 aligned with the first bore 230 and configured to receive the shaft. Includes (276).

The second annular protrusion 268 extends radially from the second wall portion 266 and is configured to engage the second edge portion 210 of the raceway 116 . The second annular protrusion 268 includes a second base portion 280, a second outer flange 282, which together are configured to support the second edge portion 210 of the raceway 116 and limit axial movement of the raceway. and a second inner flange 284. To reduce the weight of the second rim segment 214, the second base portion 280 includes a second outer groove 286 and a second inner groove 288, which grooves are annular and extend from the second wall portion. It is practically concentric with (266).

The second outer flange 282 extends radially from the second base portion 280. To further reduce the weight of the second rim segment 214, the second outer flange includes a second plurality of outer notches 290 (shown more clearly in Figure 3). The second inner flange 284 is axially spaced from the second outer flange 282. Similar to the second outer flange 282, the second inner flange 284 extends radially from the second base portion 280. To further reduce the weight of the second rim segment 214, the second internal flange 284 similarly includes a second plurality of internal notches 292 (shown more clearly in Figure 3).

To assemble rim 200, a manufacturer may independently forge first rim segment 212 and second rim segment 214 from a hardenable metal (e.g., boron steel). After forging the first rim segment 212 and the second rim segment 214, the manufacturer attaches the first inner end 272 of the second rim segment 212 to the second inner end 272 of the second rim segment 214. The rim 200 can be formed by welding (222). To extend the wear life of the rim 200 (e.g., ranging from about 2,000 hours to about 6,000 hours depending on use), the manufacturer may harden the rim 200 through heat treatment. Once so assembled, first wall portion 216 and second wall portion 266 together define wall portion 294 of rim 200 and first bore 230 and second bore 278 together. The bore 296 of the rim 200 is defined. In some implementations, the first rim segment 212 and the second rim segment 214 are formed as one piece (e.g., by casting), or have one or more different types of attachment mechanisms (e.g., screw fasteners, annular clamps, etc.) Can be combined through.

As noted above, Figures 2-3 are provided by way of example. Other examples may differ from those described with respect to FIGS. 2-3. For example, the number and arrangement of components may be different from those shown in FIGS. 2 and 3. Accordingly, additional components, fewer components, different components, differently formed components, differently sized components, and/or differently arranged components than those shown in Figures 2-3. There may be For example, to simplify manufacturing of the rim 200, a first outer groove 244, a first inner groove 246, a first plurality of inner notches 258, a first inner flange 236, At least one of the two outer grooves 286, the second inner groove 288, the second plurality of inner notches 292, and the second inner flange 284 may be removed from the rim 200.

4, a first plurality of outer notches 250 and first outer grooves 244 of rim 200 are shown. As specified above, the first plurality of internal notches 258, the second plurality of external notches 290, and the second plurality of internal notches 292 have substantially the same structure as the first plurality of external notches 250. and arrangement. Similarly, the first inner groove 246, second outer groove 286, and second inner groove 288 may have substantially the same structure and arrangement as the first outer groove 244.

As shown in FIG. 4 , the first plurality of external notches 250 are arranged circumferentially and uniformly around the first external groove 244 . The first plurality of external notches 250 minimizes the potential for damage to the first plurality of external notches 250 and/or limits the accumulation of dirt or debris inside the first plurality of external notches 250. To do so, it may include chamfered surfaces 402 . Each of the first plurality of external notches 250 may have a substantially trapezoidal shape with a circumferential width greater than the radial height. Other shapes and/or arrangements of the first plurality of external notches 250 and first external grooves 244 are also contemplated. For example, in some implementations, the radial height of one or more external notches of the first plurality of external notches 250 is from an external edge portion of the first external flange 234 to a height of the first external notch 250 of the first plurality of external notches 250. It may extend to the outer end 220. In the above example, the height may be substantially equal to the width in the circumferential direction of one or more external notches among the first plurality of external notches 250.

As noted above, Figure 4 is provided as an example. Other examples may differ from those described with respect to FIG. 4 . For example, the number and arrangement of components may be different from that shown in FIG. 4. Accordingly, there may be additional components, fewer components, different components, differently formed components, differently sized components, and/or differently arranged components than those shown in FIG. 4. You can. For example, the first plurality of external notches 250 may include more or fewer notches than the six notches shown.

In Figure 5, rim segment 500 is shown. Here, it should be understood that the rim segment 500 may be attached to another rim segment, as described above with respect to the rim 200, or may be formed integrally therewith to form a rim. Additionally, rim segment 500 may have substantially the same dimensions as rim 200 or may be made of the same material. As shown in FIG. 5 , rim segment 500 includes a first wall portion 502 and an annular protrusion 504 . Wall portion 502, which has substantially the same structure as first wall portion 216, includes a bore 506 extending therethrough to receive a shaft. The annular protrusion 504 includes a base portion 508 having substantially the same structure as the first base portion 232, and an outer flange 510. The base portion 508 and the outer flange 510 are together configured to engage and guide the first edge portion 208 of the raceway 116 . The outer flange 510 extending radially from the base portion 508 includes a plurality of notches 512 to reduce the weight of the rim segment 500. The plurality of notches 512 extend radially to form an undulating perimeter 514 of the outer flange 510 . The plurality of notches 512 have chamfered surfaces 516 to minimize the potential for damage to the plurality of notches 512 and/or to limit the accumulation of dirt or debris inside the plurality of notches 512. may include. Each of the first plurality of notches 512 may have a substantially trapezoidal shape with a circumferential width greater than the radial height. Other shapes and/or arrangements of the plurality of notches 512 are also contemplated.

As noted above, Figure 5 is provided as an example. Other examples may differ from those described with respect to FIG. 5 . For example, the number and arrangement of components may be different from that shown in FIG. 5. Accordingly, there may be additional components, fewer components, different components, differently formed components, differently sized components, and/or differently arranged components than those shown in FIG. 5. You can. For example, to further reduce the weight of the rim segment 500 and/or improve the guidance of the track 116, the rim segment 500 may be structured, e.g., on the inside of the rim 200 as arranged] may include one or more of an external groove, an internal flange, a plurality of internal notches, and an internal groove. As a further example, the plurality of notches 512 may include more or fewer than the nine notches shown.

Although rim 200 and rim segment 500 are separately described above as alternative components of tracked roller 114, the features of rim 200 and rim segment 500 may be combined with each other. A hybrid rim can be formed. For example, a hybrid rim may include one or more axially extending notches and one or more radially extending notches. In practice, mechanism 100 may include one or more rims 200, one or more rim segments 500, one or more hybrid rims, and/or combinations thereof.

Industrial applicability

The rim of the present disclosure, which may constitute a component of a track roller (e.g., track roller 114) or a carrier roller, is particularly applicable in tracked machines such as machine 100. For example, tracked machinery may be a tractor, bulldozer, loader, excavator, conveyor system, or other type of machinery.

One or more weight reducing features within the rim, such as a first outer groove 244, a first inner groove 246, a first plurality of outer notches 250, a first plurality of inner notches 258, a second outer groove (286), a second internal groove 288, a second plurality of external notches 290, a second plurality of internal notches 292, a plurality of notches 512, etc., thereby allowing the manufacturer of the rim to Reduces the amount of material needed to form. As a result, manufacturers can reduce material costs while maintaining the rim's orbital guidance functionality. Additionally, by forming weight reducing features with smooth chamfered surfaces, manufacturers can minimize the potential for damage to the rim and/or limit the accumulation of dirt or debris inside the rim. Additionally, by forming orbital interlocking surfaces (e.g., of the first annular protrusion 218, the second annular protrusion 268, and/or the annular protrusion 504) to substantially match the upper surfaces of the orbitals 116, Manufacturers can minimize wear due to repeated contact with raceways 116 and thereby extend the wear life of the rim.

The foregoing disclosure provides examples and descriptions, but is not intended to be exhaustive or to limit the implementations to the precise form disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of implementations. Additionally, any of the implementations described herein may be combined, unless the foregoing disclosure clearly provides reasons why one or more implementations may not be combined. Although certain combinations of features are recited in the claims and/or disclosed in the specification, such combinations are not intended to limit the disclosure of various embodiments. Although each dependent claim listed below may depend directly on only one claim, the disclosure of various embodiments includes each dependent claim in combination with all other claims within the scope.

As used herein, “singular noun” and “set” are intended to include one or more items and may be used interchangeably with “one or more.” Additionally, as used herein, a “specific” noun is intended to include one or more items referenced in connection with that specific noun, and may be used interchangeably with “one or more.” Additionally, as used herein, terms such as "comprise," "including," "having," "comprising," "having," or other variations thereof refer to a process comprising a list of elements; It is intended to cover non-exclusion that a method, article or device may not only include the above elements, but may also include other elements not explicitly listed. Moreover, throughout the present disclosure, relative terms such as, for example, “about,” “generally,” “substantially,” and “approximately,” may be used unless otherwise apparent to a person of ordinary skill in the art from the context. Except, it is used to indicate a possible variation of ±10% of the specified value. Additionally, the expression “based on” is intended to mean “based at least in part on,” unless clearly stated otherwise. Additionally, as used herein, the term "or" is intended to be inclusive when used consecutively, and unless clearly stated otherwise (e.g., used in conjunction with "either" or "only one of") case) can be used interchangeably with “and/or” and “and/or.” Spatially relative terms such as “below”, “lower”, “above”, “upper”, etc. are used herein to refer to one element(s) or feature(s) as shown in the drawings for convenience of explanation. It can be used to explain the relationship between elements or features. Spatially relative terms are intended to include different orientations of equipment, devices and/or elements in use or operation, in addition to the orientation depicted in the drawings. Equipment may be otherwise oriented (90 degrees, or rotated in other directions), and the spatially relative descriptors used herein may be interpreted similarly accordingly.

Claims (10)

A rim (200) for a track roller (114), wherein the rim has
A wall portion 294 having a first end 220 and a second end 270 opposite the first end 220,
The first end 220 includes a first opening 224,
wherein the second end (270) includes a second opening (274) in communication with the first opening (224) to define a bore (296) for the shaft of the track roller (114). wall part (294);
A first annular protrusion 218 extends radially from the wall 294 and interlocks with the first edge 208 of the track 116, and the first annular protrusion 218 is
A first external flange (234) having a first plurality of external notches (250),
The first outer flange (234) is configured to limit movement of the track (116) in a first axis direction,
The first outer flange (234) includes the first annular protrusion (218), wherein the first outer flange (234) is formed from a single, unitary piece of material; and
A second annular protrusion 268 extends radially from the wall 294 and interlocks with the second edge 210 of the track 116, and the second annular protrusion 268 is
said second annular protrusion (268) comprising a second outer flange (282) configured to limit movement of said orbit (116) in a second axis direction opposite to the first axial direction. In, rim (200) for track rollers. According to paragraph 1,
The first annular protrusion 218 further includes a first base portion 232;
The second annular protrusion 268 further includes a second base portion 280,
The first base portion 232 and the second base portion 280 have a diameter larger than the diameter of the wall portion 294,
The first outer flange (234) and the second outer flange (282) have a diameter greater than the diameter of the first base portion (232) and the second base portion (280). Lim (200). According to claim 1 or 2,
The first annular protrusion (218) further includes a first inner flange (236) axially spaced from the first outer flange (234); and
The second annular protrusion (268) further comprises a second inner flange (284) axially spaced from the second outer flange (282). According to clause 3,
The second outer flange (282) includes a second plurality of outer notches (290);
The first internal flange 236 includes a first plurality of internal notches 258; and
The rim (200) for a track roller, wherein the second internal flange (284) includes a second plurality of internal notches (292). Tracked roller according to claim 1 or 2, wherein the first plurality of outer notches (250) extend axially to form a wavy outer surface (252) of the first outer flange (234). Yong Lim (200). In the rim segments 212, 500 for track rollers 114,
The rim segments 212 and 500 are
Wall portions (216, 502) having a first end (220) and a second end (222),
The first end 220 includes a first opening 224,
The second end (222) comprises a second opening (228) communicating with the first opening (224) to define a bore (230, 506) for the shaft of the track roller (114). , the wall portions 216, 502; and
Annular protrusions 218, 504 extend radially from the walls 216, 502, and the annular protrusions 218, 504 have
a base portion (232, 508) configured to contact the edge portion (208) of the track (116), and
External flanges (234, 510) configured to limit axial movement of the track (116),
The external flanges (234, 510) include a plurality of notches (250, 512),
The outer flange (234, 510) comprises an annular projection (218, 504) having a diameter greater than the diameter of the base portion (232, 508). 212, 500). 7. The rim segment (212, 500) of claim 6, wherein the outer flange (234, 510) comprises an outer surface adjacent the outer surface (238) of the base portion (232, 508). . 8. A rim segment (212) for a track roller according to claim 7, wherein the outer surface of the outer flange (234) comprises a plurality of notches (250). 9. Rim segment (212) according to any one of claims 6 to 8, wherein the outer surface (238) of the base portion (232) comprises an annular groove (244). According to any one of claims 6 to 8,
The plurality of notches 250 are a plurality of external notches 250; and
The annular protrusion 218 further includes an inner flange 236 axially spaced from the outer flange 234,
The rim segment (212) for a track roller, wherein the internal flange (236) includes a plurality of internal notches (258).